Patent GB-609873-A (GB)
Abstract: 609,873. workmen's time-recorders. FINDLAY, A. J. March 21, 1946, No. 8820. [Class 106 (iv)] [Also in Group XVIII] A workmen's time-recorder is characterised by time-controlled means for shifting card marking means in stepwise manner a predetermined distance in one direction at predetermined intervals so that the lineal distance between the starting and stopping time indications is a measure of a working period. Card-controlled punching mechanism. Upon the insertion of a card in a receiver 42, Fig. 5, between grooves in guides 43 and between a punch holder 55 and die support 56, a spring arm 161, Fig. 14, is depressed to cause a pivoted, spring-pressed trigger 145 working in slots in contact arms 139, 140 to close a circuit to a solenoid 86, Fig. 5. Energization of the solenoid causes a rack 84 to actuate a circuitbreaker 167 and turn a cam 71c, Figs. 6 and 8, on a shaft 71d. Co-operation of the cam 71c with a roller 71b on a yoke 71 pivoted at 78 rocks the yoke forward against a spring 71a to cause a push pin 67 to strike a spring-pressed punch 59, which plunges through the card into its corresponding opening 61 in a die 57, the position of the hole thus produced in the card being determined by the vertical position of the punching mechanism on the guides 43 and by the appropriate selection of the push pin 67 to be aligned with its punch from fourteen such pins positioned round a cylinder 68 correspond. ing to the fourteen day and night periods of the week and indicated on a wheel 73. Time-controlled punch shift and selection mechanism. A cam 114 on a shaft 116, Fig. 9, is driven at the rate of one revolution per six minutes by a synchronous motor through a pivoted pawl device to,allow for manual setting by a handle 117. Once every six minutes the pawl 114 allows a spring 115 to lift a pivoted lever 110 so that a spring-pressed pawl 109 can advance a 120-toothed gear 104, one tooth, and cause a pawl 103, pivoted thereto, to advance a cam 101, rigidly secured to a drum 92, 12 inches in circumference, and so wind thereon <1>/10 of an inch of a flexible band 89 which passes over a pulley 90 and is secured to the punching mechanism at 91, thus lifting it <1>/10 of an inch each 6 minutes. At the end of 12 hours, the gear 104 completes a revolution and so positions a cam 105 fixed thereto, that. a pivoted spring-pressed resetting arm 125 can swing to the left and cause a trip member 132 to knock the pawl 103 out of engagement with the cam 101 so that the punching mechanism descends under gravity to its starting position and the drum 92 makes one revolution while a surface 131 rides on a roller 129 to lift the trip member 132 clear of the pawl 103 so that it can resume its working position for the next 12 hours. Disposal of punchings. A plate, extending from the card receiver 42 to a bracket 45, forms, with the card, a shoot down which the punchings fall on to an inclined barrier 170 which directs them outwardly through a discharge portion of the shoot. Clock mechanism. A second cord attached to the punch mechanism passes over a pulley adjacent to the pulley 90 and is wound on a drum containing a spring which drives clock hands at six-minute intervals in accordance with the step-by-step ascension of the punch mechanism. When the punch mechanism finally descends, the clock hands are turned back 11 hours 54 minutes to read the next hour and as the drum revolves in reverse the spring is rewound. Specification 601,703 is referred to.